Getting error on my code while , I am importing the pdfplumber

[jitendra12300]

Error: Python.Runtime.PythonException: 'DLL load failed while importing _rust: The specified module could not be found.'
C#, .net windows form

Code:
public static bool ExportBOMPdfFileToExcel(string fileName)
{
try
{
if (File.Exists(fileName) == false)
{
return false;
}
string? pythonnetPYDllKey = Convert.ToString(ConfigurationManager.AppSettings["Environment_PythonnetPYDllKey"]);
if (string.IsNullOrEmpty(pythonnetPYDllKey) == false && string.IsNullOrEmpty(Environment.GetEnvironmentVariable(pythonnetPYDllKey)) == true)
{
setEnvironmentVariables();
}
PythonEngine.Initialize();
dynamic? pyResult;
// DrawingCheckListAttributeVM drawingCheckListAttributeVM = new DrawingCheckListAttributeVM();
Dictionary<string, string> drawingAttributes = new();
using (Py.GIL())
{
string? pyFilePath = Convert.ToString(ConfigurationManager.AppSettings["ExportBOMPdfToBOMExcel"]);
dynamic os = Py.Import("os");
dynamic sys = Py.Import("sys");
dynamic pdfminer = Py.Import("pdfminer");
dynamic pdfplumber = Py.Import("pdfplumber");// this line throwing error
sys.path.append(os.path.dirname(os.path.expanduser(pyFilePath)));
#pragma warning disable CS8604 // Possible null reference argument.
var fromFile = Py.Import(Path.GetFileNameWithoutExtension(pyFilePath));
#pragma warning restore CS8604 // Possible null reference argument.

                PyObject[] pyParams = new PyObject[1];
                pyParams[0] = fileName.ToPython();
                pyResult = fromFile.InvokeMethod("exportPDFToExcel", pyParams);

                if (pyResult != null && pyResult.HasAttr("__dict__") == true)
                {
                    //dynamic dict = pyResult.GetAttr("__dict__");
                    dynamic dict = pyResult.__dict__;
                    // Iterate through all key-value pairs in the dictionary
                    if (dict != null)
                    {
                        foreach (dynamic key in dict.keys())
                        {
                            dynamic value = dict[key];
                            drawingAttributes.Add(Convert.ToString(key), Convert.ToString(value));
                        }
                    }
                }
                else
                {
                    MessageBox.Show("It not return data.");
                }
            }
            PythonEngine.Shutdown();
            return true;
        }
        catch
        {
            throw;
        }
    }